US20190264755A1 - Dog clutch having a synchronizing mechanism - Google Patents
Dog clutch having a synchronizing mechanism Download PDFInfo
- Publication number
- US20190264755A1 US20190264755A1 US16/331,169 US201716331169A US2019264755A1 US 20190264755 A1 US20190264755 A1 US 20190264755A1 US 201716331169 A US201716331169 A US 201716331169A US 2019264755 A1 US2019264755 A1 US 2019264755A1
- Authority
- US
- United States
- Prior art keywords
- disk
- clutch body
- clutch
- shaped clutch
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D2011/008—Clutches in which the members have interengaging parts characterised by the form of the teeth forming the inter-engaging parts; Details of shape or structure of these teeth
Definitions
- the disclosure concerns a clutch having two disk-shaped clutch bodies with face splines and a synchronizing mechanism for synchronizing the rotation speeds of the clutch bodies before engagement.
- the clutch bodies are axially spaced from each other and the one clutch body is arranged so as to be axially movable against the other clutch body to achieve engagement of the face splines.
- DE 10 2014 209 936 B3 discloses a synchronizing mechanism for synchronizing the rotation speed of a clutch or brake of an automatic gearbox, inducing a first and a second disk each having face splines.
- the disks are axially spaced from each other and the one disk is axially movable against the other disk to achieve engagement of the face splines.
- At least one disk is connected rotationally fixedly to a synchronizer ring against which the disk can be moved axially against a return force.
- the synchronizer ring has a run-up face by means of which, on a movement of the disks against each other, it runs against a run-up face of the other disk.
- the toothing in DE 10 2014 209 936 B3 is configured as roof-type toothing, i.e., the tooth flanks of a tooth run together from the tooth foot to the tooth head. With such face splines, the torques to be transmitted generate a high axial force component which presses the clutch disks apart.
- a clutch according to the disclosure has face splines formed as claw-type toothing.
- a spring element is provided to release the clutch.
- the claw-type toothings include roof-type toothings.
- the teeth of the claw-type toothings are formed so as to be substantially rectangular in outline and have tooth flanks which are formed parallel or almost parallel to each other.
- the teeth of the claw-type toothing may have an undercut. This means that the tooth flanks run together in a wedge shape in an axially parallel direction so that a tooth foot is narrower than a tooth head. With such a configuration of the tooth flanks, an applied torque exerts an axial force which draws the clutch bodies together. This measure guarantees that the connection of the clutch bodies cannot be released during torque transmission.
- the tooth flanks are formed rising slightly in the axially parallel direction, so that a tooth foot is wider than a tooth head. This measure facilitates the mutual engagement of the face splines on closure of the clutch, and release of the clutch is possible without problems.
- the rising tooth flank angle of the clutch is formed sufficiently flat that only a very slight axial force component is generated, so that a setting force for closing and holding the clutch closed is very low even at high torque levels.
- At least one cup spring a cup spring packet, for example, is provided which coaxially surrounds a gear part, e.g., a shaft.
- the shaft serves as a guide for an inner diameter of the cup spring.
- the cup spring is axially supported on a clutch body and on a synchronizer ring on the other clutch body which is arranged spaced therefrom. With this arrangement, the rotation speeds of the clutch bodies are synchronized before engagement of the face splines. In this way, the synchronizer ring is moved by means of the cup spring so far that the synchronizer ring comes into frictional contact with the clutch body.
- the synchronizer ring and the clutch body have a common friction face, e.g., a peripheral conical friction face.
- the cup spring or a cup spring packet with greater diameter is used without requiring larger installation space.
- the outer diameter of the cup spring rests on a guide of the gear part, e.g., on a housing receiving the shaft.
- the cup spring surrounds the clutch body coaxially outside the face splines.
- FIG. 1 shows a dog clutch with face splines in perspective view.
- FIG. 2 shows the dog clutch in cross-section in diagrammatic depiction.
- FIG. 3 shows diagrammatically in cross-section, a second exemplary embodiment with a cup spring arranged outside the claw-type toothing.
- a clutch 1 has two disk-like clutch bodies 2 , 3 with face splines, of which at least one is arranged so as to be movable towards and away from the other in order to actuate the clutch 1 .
- the clutch bodies 2 , 3 each have face splines 4 , 6 which may be formed as claw-type toothing.
- the claw-type toothing in addition has a roof-type toothing.
- the teeth 4 . 1 , 6 . 1 of the claw-type toothings 4 , 6 each have tooth flanks 4 . 2 , 6 . 2 which are arranged parallel or almost parallel to each other.
- the first clutch body 2 according to FIG. 2 is connected rotationally fixedly to a first gear part 7 , e.g. a shaft or a carrier.
- the second clutch body 3 is connected rotationally fixedly to a second gear part 8 , e.g. a housing or a sleeve with internal toothing.
- the second clutch body 3 has a synchronizer ring 9 which is connected rotationally fixedly to the first gear part 7 and has a common friction face 11 with the clutch body 3 .
- the friction face 11 is may be formed as a peripheral conical friction face 11 .
- a multi-cone system may be used with several synchronizer rings having peripheral conical friction faces.
- An annular spring 12 e.g. a cup spring or a cup spring packet, is provided between the clutch bodies 2 , 3 .
- This spring coaxially surrounds the gear part 7 , is arranged inside the face splines 4 , 6 , and is supported axially firstly on the clutch body 2 and secondly on synchronizer ring 9 .
- the inner periphery 13 of the cup spring 12 is guided on a guide 14 , e.g. the outer periphery of the gear part 7 .
- the cup spring 12 is here axially supported against an end face 16 of the clutch body 2 and an opposite end face 17 of the synchronizer ring 9 . It may also be possible to guide the outer periphery 18 of the cup springs 12 using radially oriented stop faces 19 , 21 formed on the clutch bodies 2 , 3 as guides.
- At least one cup spring 22 e.g., a cup spring packet, is provided which has a greater diameter than the cup spring 12 in order to transmit greater forces to a synchronizer ring 25 and generate greater return forces for releasing the clutch 1 or separating the clutch bodies 2 , 3 .
- the cup spring 22 surrounds the face splines 4 , 6 of the clutch bodies 2 , 3 coaxially, and its outer diameter 23 is supported and axially guided on a guide 24 , in particular on an inwardly oriented radial stop of the housing.
- the synchronizer ring 25 has a greater diameter to provide a larger friction face 27 with the clutch body 2 , is arranged coaxially outside the clutch body 2 , and is connected rotationally fixedly to the gear part 8 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
- This application is the United States National Phase of PCT Appln. No. PCT/DE2017/100944 filed Nov. 7, 2017, which claims priority to German Application Nos. DE102016222539.1 filed Nov. 16, 2016, the entire disclosures of which are incorporated by reference herein.
- The disclosure concerns a clutch having two disk-shaped clutch bodies with face splines and a synchronizing mechanism for synchronizing the rotation speeds of the clutch bodies before engagement. The clutch bodies are axially spaced from each other and the one clutch body is arranged so as to be axially movable against the other clutch body to achieve engagement of the face splines.
- DE 10 2014 209 936 B3 discloses a synchronizing mechanism for synchronizing the rotation speed of a clutch or brake of an automatic gearbox, inducing a first and a second disk each having face splines. The disks are axially spaced from each other and the one disk is axially movable against the other disk to achieve engagement of the face splines. At least one disk is connected rotationally fixedly to a synchronizer ring against which the disk can be moved axially against a return force. The synchronizer ring has a run-up face by means of which, on a movement of the disks against each other, it runs against a run-up face of the other disk.
- The toothing in DE 10 2014 209 936 B3 is configured as roof-type toothing, i.e., the tooth flanks of a tooth run together from the tooth foot to the tooth head. With such face splines, the torques to be transmitted generate a high axial force component which presses the clutch disks apart.
- A clutch according to the disclosure has face splines formed as claw-type toothing. A spring element is provided to release the clutch. To simplify the engagement of the teeth of the claw-type toothings, the claw-type toothings include roof-type toothings. The teeth of the claw-type toothings are formed so as to be substantially rectangular in outline and have tooth flanks which are formed parallel or almost parallel to each other. Here, the teeth of the claw-type toothing may have an undercut. This means that the tooth flanks run together in a wedge shape in an axially parallel direction so that a tooth foot is narrower than a tooth head. With such a configuration of the tooth flanks, an applied torque exerts an axial force which draws the clutch bodies together. This measure guarantees that the connection of the clutch bodies cannot be released during torque transmission.
- In an exemplary embodiment, it is provided that the tooth flanks are formed rising slightly in the axially parallel direction, so that a tooth foot is wider than a tooth head. This measure facilitates the mutual engagement of the face splines on closure of the clutch, and release of the clutch is possible without problems. The rising tooth flank angle of the clutch is formed sufficiently flat that only a very slight axial force component is generated, so that a setting force for closing and holding the clutch closed is very low even at high torque levels.
- To create a return force for releasing the clutch, at least one cup spring, a cup spring packet, for example, is provided which coaxially surrounds a gear part, e.g., a shaft. The shaft serves as a guide for an inner diameter of the cup spring. The cup spring is axially supported on a clutch body and on a synchronizer ring on the other clutch body which is arranged spaced therefrom. With this arrangement, the rotation speeds of the clutch bodies are synchronized before engagement of the face splines. In this way, the synchronizer ring is moved by means of the cup spring so far that the synchronizer ring comes into frictional contact with the clutch body. To this end, the synchronizer ring and the clutch body have a common friction face, e.g., a peripheral conical friction face.
- In a second exemplary embodiment, to increase the cup spring force, the cup spring or a cup spring packet with greater diameter is used without requiring larger installation space. To this end, the outer diameter of the cup spring rests on a guide of the gear part, e.g., on a housing receiving the shaft. In this arrangement, the cup spring surrounds the clutch body coaxially outside the face splines.
- Two exemplary embodiments of the disclosure are shown in the drawings and described below. The drawings show:
-
FIG. 1 shows a dog clutch with face splines in perspective view. -
FIG. 2 shows the dog clutch in cross-section in diagrammatic depiction. -
FIG. 3 shows diagrammatically in cross-section, a second exemplary embodiment with a cup spring arranged outside the claw-type toothing. - According to
FIG. 1 , a clutch 1 has two disk-like clutch bodies - The
clutch bodies face splines type toothings - The
first clutch body 2 according toFIG. 2 is connected rotationally fixedly to afirst gear part 7, e.g. a shaft or a carrier. Thesecond clutch body 3 is connected rotationally fixedly to asecond gear part 8, e.g. a housing or a sleeve with internal toothing. Thesecond clutch body 3 has asynchronizer ring 9 which is connected rotationally fixedly to thefirst gear part 7 and has acommon friction face 11 with theclutch body 3. Thefriction face 11 is may be formed as a peripheralconical friction face 11. Depending on application, a multi-cone system may be used with several synchronizer rings having peripheral conical friction faces. - An
annular spring 12, e.g. a cup spring or a cup spring packet, is provided between theclutch bodies gear part 7, is arranged inside theface splines clutch body 2 and secondly onsynchronizer ring 9. Theinner periphery 13 of thecup spring 12 is guided on aguide 14, e.g. the outer periphery of thegear part 7. Thecup spring 12 is here axially supported against anend face 16 of theclutch body 2 and anopposite end face 17 of thesynchronizer ring 9. It may also be possible to guide theouter periphery 18 of thecup springs 12 using radially orientedstop faces clutch bodies - In a second exemplary embodiment according to
FIG. 3 , in comparison with the first exemplary embodiment, at least onecup spring 22, e.g., a cup spring packet, is provided which has a greater diameter than thecup spring 12 in order to transmit greater forces to asynchronizer ring 25 and generate greater return forces for releasing the clutch 1 or separating theclutch bodies cup spring 22 surrounds theface splines clutch bodies outer diameter 23 is supported and axially guided on aguide 24, in particular on an inwardly oriented radial stop of the housing. Thesynchronizer ring 25 has a greater diameter to provide alarger friction face 27 with theclutch body 2, is arranged coaxially outside theclutch body 2, and is connected rotationally fixedly to thegear part 8. - By combination of the exemplary embodiments in
FIGS. 2 and 3 , it is possible to assign asynchronizer ring clutch body -
-
- 1 Clutch
- 2 Clutch body
- 3 Clutch body
- 4 Face splines (2)
- 4.1 Tooth
- 4.2 Tooth flank
- 4.3 Roof-type toothing
- 6 Face splines (3)
- 6.1 Tooth
- 6.2 Tooth flank
- 6.3 Roof-type toothing
- 7 Gear part (gear)
- 8 Gear part (shaft)
- 9 Synchronizer ring
- 11 Friction face
- 12 Cup spring
- 13 Inner diameter (12)
- 14 Guide
- 16 End face (2)
- 17 End face (9)
- 18 Outer diameter (12)
- 19 Guide (2)
- 21 Guide (3)
- 22 Cup spring
- 23 Outer diameter (22)
- 24 Guide
- 25 Synchronizer ring
- 27 Friction face
Claims (11)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016222539.1 | 2016-11-16 | ||
DE102016222539.1A DE102016222539B4 (en) | 2016-11-16 | 2016-11-16 | Claw coupling with synchronizing device |
PCT/DE2017/100944 WO2018091030A1 (en) | 2016-11-16 | 2017-11-07 | Dog clutch having a synchronizing mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
US20190264755A1 true US20190264755A1 (en) | 2019-08-29 |
Family
ID=60473243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/331,169 Abandoned US20190264755A1 (en) | 2016-11-16 | 2017-11-07 | Dog clutch having a synchronizing mechanism |
Country Status (4)
Country | Link |
---|---|
US (1) | US20190264755A1 (en) |
CN (1) | CN109952446A (en) |
DE (1) | DE102016222539B4 (en) |
WO (1) | WO2018091030A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111577781B (en) * | 2020-04-02 | 2022-05-31 | 义乌吉利自动变速器有限公司 | Dog tooth clutch and control device |
CN111577889B (en) * | 2020-04-07 | 2022-08-02 | 义乌吉利自动变速器有限公司 | Clutch and shared parking control device |
DE102022132440A1 (en) | 2021-12-16 | 2023-06-22 | Schaeffler Technologies AG & Co. KG | Form-fit coupling with a locking device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1030692B (en) * | 1955-03-17 | 1958-05-22 | Egon Martyrer Dr Ing | Synchronization device for heavy, high performance gear change transmissions, especially for road and rail vehicles |
US4566566A (en) * | 1983-09-19 | 1986-01-28 | Societe Alsacienne De Construction De Material Textile | Device for temporarily uncoupling two coaxial rotating elements |
US5035310A (en) * | 1986-07-23 | 1991-07-30 | Michael Meyerle | Clutch, particularly for automatic transmission for automotive vehicles |
DE10115128A1 (en) * | 2001-03-27 | 2002-10-10 | Zahnradfabrik Friedrichshafen | Power branching gear has stagelessly adjustable power branch and mechanical power branch with at least two movement areas |
DE10244523B4 (en) * | 2002-09-25 | 2014-07-03 | Zf Friedrichshafen Ag | Transmission and method for controlling a transmission with at least one switching element |
GB0412738D0 (en) * | 2004-06-08 | 2004-07-07 | Ricardo Uk Ltd | A high torque synchromesh with dog clutch engagement |
WO2012048842A1 (en) * | 2010-10-11 | 2012-04-19 | Magna Powertrain Ag & Co Kg | Coupling arrangement |
JP6020422B2 (en) * | 2013-11-15 | 2016-11-02 | トヨタ自動車株式会社 | Engagement device and drive device for hybrid vehicle |
DE102014209936B3 (en) | 2014-05-26 | 2015-09-10 | Schaeffler Technologies AG & Co. KG | synchronizer |
-
2016
- 2016-11-16 DE DE102016222539.1A patent/DE102016222539B4/en active Active
-
2017
- 2017-11-07 US US16/331,169 patent/US20190264755A1/en not_active Abandoned
- 2017-11-07 WO PCT/DE2017/100944 patent/WO2018091030A1/en active Application Filing
- 2017-11-07 CN CN201780070441.0A patent/CN109952446A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102016222539B4 (en) | 2021-05-06 |
DE102016222539A1 (en) | 2018-05-17 |
WO2018091030A1 (en) | 2018-05-24 |
CN109952446A (en) | 2019-06-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9151339B2 (en) | Locking disconnect clutch | |
US20190264755A1 (en) | Dog clutch having a synchronizing mechanism | |
US3366208A (en) | Synchronizer | |
US10851848B2 (en) | Sychronizer unit for a manual transmission, and manual transmission | |
KR20080085145A (en) | Synchronizing ring and synchronous clutch | |
JP6419095B2 (en) | Clutch assembly for vehicle and method for driving vehicle | |
RU2013105760A (en) | SWITCHING DEVICE WITH SYNCHRONIZER | |
KR950019314A (en) | Synchronizers with Magnetic Energizing Mechanism | |
US2498399A (en) | Transversely engaging positive clutch | |
US7131521B2 (en) | Synchronizer | |
SE506984C2 (en) | Synchronization device in a vehicle gearbox | |
KR20040064617A (en) | Synchronizer | |
US11073181B2 (en) | Transmission and method for shifting a transmission | |
US10578169B2 (en) | Reduced axial length increased capacity synchronizer | |
US10030719B2 (en) | Clutch | |
US10648517B2 (en) | Bi-stable front axle disconnect with synchronizer | |
US6443281B2 (en) | Synchronizer | |
US10012268B1 (en) | Torque limiting wedge clutch | |
GB1224087A (en) | Improvements in and relating to gear boxes | |
US20190242439A1 (en) | Clutch device | |
US20200232518A1 (en) | Clutch device for a drivetrain of a vehicle | |
WO2017086858A1 (en) | A latch cone ring for a synchronizing arrangement | |
RU2019120792A (en) | Synchronizer for manual transmission, in particular for vehicle transmission | |
BR0006745A (en) | Synchronizer | |
KR970066147A (en) | Synchronizer Mechanism |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GIEHL, SEBASTIAN;HARTMANN, HORST;REEL/FRAME:048526/0378 Effective date: 20181010 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |